Learn how to make a sourdough starter recipe from scratch with just flour and water. This versatile ingredient can be used to make breads, cakes, cookies, and so much more.

If you hang around the traditional foods community, chances are you have heard of making homemade sourdough starter from scratch.

I have had my homemade starter for over six years now. It is vital in my traditional food kitchen.

What Is A Sourdough Starter?

A sourdough starter is a live active culture made of fermented flour and water that is full of beneficial bacteria and yeasts.

It is used as a way to ferment recipes and naturally rise bread.

Why You Will Love Sourdough:

If you are unfamiliar, let me fill you in on all the reasons why crazy folks, like me, go through the effort of handcrafting, and maintaining, a beneficial colony of yeasts and bacteria in their kitchens.

Before yeast was isolated and sold in little packets, sourdough starter was a valuable commodity in homes and families, passed down for generations.

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Health Benefits

Have you ever heard of phytic acid? Basically, it’s an antinutrient found in grains, beans, and nuts that interferes with the absorption of certain nutrients. They are present on grains to keep them from spoiling.

There is a reason they are there, but there is also good evidence that our bodies weren’t meant to handle them. Proper preparation of grains eliminates most, if not all, of the phytic acid in offending foods.

This is the very reason traditional cultures soaked and fermented their grains, seeds, and beans. These days, we’ve lost that art. And what have we found? People can’t handle grains anymore.

Instead of using instant yeast packets, people in traditional cultures leavened their bread with a fermented starter that captured all the yeasts in the environment.

AKA Sourdough starter

How on earth do we capture native yeasts? Read on, because I explain how to make your very own starter.

Because I love good food

I already confessed my foodie tendencies with you all. I reckon it’s the same inclination that led me into the world of homemade sourdough.

Locally made sourdough starter, with the native yeasts of the area present, is certainly the thing a foodie’s dreams are made of. A jar of healthy, productive starter is teaming with life, as evidenced by all the bubbles you will see rising to the surface.

Once you’ve experienced homemade sourdough baked goods, store-bought breads and pancakes simply don’t cut it. Sourdough has a depth of flavor that just can’t be found in something made quickly with a packet of instant yeast.

This post contains affiliate links, which means I make a small commission at no extra cost to you. See my full disclosure here.

FAQ:

hand holding a wooden spoon in a bowl of sourdough starter with a blue and white towel to the left

How long does it take to make sourdough starter?

It takes about a week to create an active sourdough starter, but sometimes it can take about two weeks to make a starter ready to bake bread.

Do you have to discard sourdough starter every time you feed it?

When you are first creating your sourdough starter, yes. If you donโ€™t discard you will have so much starter that it will be hard to keep healthy. This is because the more starter you have the more flour and water you will need to add for the yeasts and bacteria to feed on.

After having a starter for a while rather than discarding you can just use it in discard recipes. This is a much more useful way of removing some of the starter rather than throwing it in the trash.

How do you know your sourdough starter is ready to use?

You will know your sourdough starter is read to use when you feed it and after 4-12 hours it doubles in size and is super bubbly. A good way to be able to determine this, is to place a rubber band where the top of the starter is after you feed it. Then after a few hours have passed you can see just how high it has grown.

Another way is to perform the float test. Take a small glass of room temperature water. Add a quarter sized dollop of active starter. If it floats, it is ready to bake with. If it doesnโ€™t it is not active enough.

Sourdough Starter Recipe:

By now, you know why you want to have a bowl of sourdough starter bubbling away in your kitchen, but how the heck do you make one?

Ingredients

Flour (Whole grain wheat, unbleached all-purpose, and einkorn are all great choices.)

Filtered water (I use a Berkey water filter. We have the Royal size for our family of 7. You can find my full Berkey review HERE.)

Tools

Glass bowl (Metal can react with beneficial bacteria and yeasts.)

Wooden spoon

Tea towel

How To Make Sourdough Starter

Day 1:

On day one, mix one cup of flour and one cup filtered water. Stir vigorously, making sure to scrape down the sides and incorporate everything. Place a clean tea towel over the bowl and set aside. Allow it to sit for 24 hours.

Day 2:

On day two, discard half of the mixture and repeat the process. Add one cup flour, one cup water, stir vigorously, and cover.

Why do you have to remove half the mixture? By day four, you would have sourdough starter overflowing from your bowl. Also, removing half ensures that the right amount of flour and water is feeding the growing colony of beneficial yeast. If you weren’t discarding half, the cup of flour wouldn’t be enough to feed them on days three and four. Basically, you would end up with a lot of extra starter by the end of the process, and none of it would be mature.

Day 3-5

Repeat the day two instructions for days three, four, and five.

Day 6-7

On days six and seven, do the same but feed it every 12 hours, instead of every 24.

By day seven, there should be enough beneficial bacteria and yeast present to bake sourdough bread and other fermented sourdough goodies, like pancakes and english muffins.

You will know it’s working if it bubbles, and doubles in size.

Sourdough Starter Maintenance

Once your sourdough starter is alive and active, there will be some maintenance to keep it going for years and years.

In the refrigerator for occasional use

Storing it in the refrigerator slows down the fermentation process, so one feeding per week, or every other week, is sufficient.

I usually use my starter a couple times per week. If I plan to make pancakes Saturday morning, for example, I will pull my starter out of the fridge Friday morning and add flour and water. By Saturday morning it is bubbly and ready to go.

I remove the two cups of starter needed for my pancake recipe, and put the “master starter” back in the fridge. Since it was fed the day before, it is good to go for another week, or whenever I need it next.

On the counter for daily use

Since the “little guys”, as my kids like to call the bacteria in the starter, are active at room temperature, they will have to be fed more often if keep it in this state.

If you leave your starter out on the counter, you will need to add flour and water every day. You will also have to be baking every day to use up all that starter.

Most people probably won’t use the starter quite so much, unless you own and operate a bakery. I would recommend storing it in the refrigerator between uses.

Video tutorial on how to make a sourdough starter from scratch

Helpful Resources

Every day I get loads of questions about sourdough starter, so I devoted a whole post called, How to Care for Sourdough Starter filled with your questions and my answers. You can use this post a reference guide.

Thank you so much for stopping by the farmhouse! I hope this is just the beginning of our sourdough journey.

Check out my other sourdough recipes and posts

If you try this recipe and love it, I would love if you gave it 5 stars! Also, tag me on Instagram @farmhouseonboone.

Sourdough Starter

4.53 from 1052 votes
Learn how to make a homemade sourdough starter from scratch. Video tutorial also includes sourdough health benefits and our favorite ways to use sourdough starter in the farmhouse.
Additional Time: 7 days
Total: 7 days
Servings: 1 sourdough starter
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Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week!
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Ingredients 

  • Flour, Whole grain wheat, unbleached all purpose, and einkorn are all great choices.
  • Filtered water

Instructions 

  • On day one, mix one cup of flour and one cup filtered water. Stir vigorously, making sure to scrape down the sides and incorporate everything. Place a clean tea towel over the bowl and set aside. Allow it to sit for 24 hours.
  • On day two, discard half of the mixture and repeat the process. Add one cup flour, one cup water, stir vigorously, and cover.
  • Repeat the day two instructions for days three, four, and five.
  • On days six and seven, do the same but feed it every 12 hours, instead of every 24.
  • By day seven, there should be enough beneficial bacteria and yeast present to bake sourdough bread and other fermented sourdough goodies, like pancakes and english muffins. You will know itโ€™s working if it bubbles, and doubles in size.

Notes

Sourdough Starter Maintenance

  • Once your sourdough starter is alive and active, there will be some maintenance to keep it going for years and years.

In The Refrigerator For Occasional Use

  • Storing it in the refrigerator slows down the fermentation process, so one feeding every week, or every other week, is sufficient.
  • I usually use my starter a couple times per week. If I plan to make pancakes Saturday morning, for example, I pull my starter out of the fridge Friday morning and add flour and water. By Saturday morning it is bubbly and ready to go. I remove the two cups of starter needed for my pancake recipe and put the โ€œmaster starterโ€ back in the fridge. Since it was fed the day before, it is good to go for another week, or whenever I need it next.

On The Counter For Daily Use

  • Since the โ€œlittle guysโ€, as my kids like to call the bacteria in the starter, are active at room temperature, they will have to be fed more often if kept in this state.
  • If you leave your starter out on the counter, you will need to add flour and water every day. You will also have to be baking daily to use up all that starter.
  • Most people probably wonโ€™t use the starter quite so much, unless you own and operate a bakery. I would recommend storing it in the refrigerator between uses.

Nutrition information is automatically calculated, so should only be used as an approximation.

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2,073 Comments

  1. Jeanette says:

    Hi Lisa! Sorry I lost email I was sending. I am 83 and I wanted to make my own bread! Like mama used to make! we ere farmers mama made wonderful sour dough breads! Cannot find her recipe. found yours on line. Like it simply and you explain step by step. this is my 4th day today my qt jar is half full with some small bubbles that rose some during night but sunk. I took out half yesterday added 1 cup flour & water stirred well and put it back in a clean jar. today just over 2 cups ? smells right tastes right .do Id take out half and a cup of water & flour! The home is about 68–72. heat home with wood so temp goes up and down, Thanks Lisa for taking the time to help an older grandma

    1. Lisa says:

      You discard half of the starter you have and then feed again according to the schedule. Hope that helps! Good luck!

  2. Alecia says:

    Hey Iโ€™m new here just trying to get started making a sourdough starter. When starting out and mixing 1 c water + 1 c flour; on day 2 should I just measure out 1 cup of the mixture transfer to a new container and add the 1c water + 1 c flour for it to be a consistent 1:1:1 ratio? And continue this way or just eyeball discarding half each day

    1. Lisa says:

      I eyeball discarding, because it may not be exactly one cup, depending on how your starter grows. Hope that makes sense!

  3. Hayley Dantzler says:

    Hi! I have another question… but first I need to give a little info… I started my sourdough a week ago Monday. Monday night I made your sourdough sandwich bread, but it wasn’t wanting to rise very much. I don’t know if it was because my house was kind of cold over night or if it was my starter. Also, I saw that some people in the comments of the recipe said that when they halved the recipe it wasn’t wanting to rise. I halved my recipe too. After that I kept feeding and discarding at night because a figured my starter wasn’t strong enough. It has some bubbles, but it seems very thin, and I don’t think it doubles in size. Do you think that it needs more food? I saw someone say if you leave it out on the counter it needs to be fed twice a day.

    1. Lisa says:

      Have you tried the float test on your starter? That will tell you if it is ready and active.

  4. Sara says:

    I am on day 5 and I feel like I have yet to see it rise. There are bubbles present, but no rise, and it smells like you and others describe how it should smell. I also have a thin layer of liquid (hooch) that I mix back in with it before discarding. I am using unbleached AP bread flour and filtered water (I live in a city), and my house is typically in the upper 60s to low 70s. Should I be seeing a rise at this point? Do I need to give it more time and trust the process? Or will mine just be one of those weird ones that does not have much rise?
    Thank you for the help! I am loving this process and cant wait to make my first loaf!

    1. Lisa says:

      For sure trust the process! If you are noticing a lot of hooch, you may need to feed it more often. That could help! If you feel it is ready, even with no rise, you can always go ahead and try the float test.

  5. Donna says:

    As a starter leaving it on the counter is okay?

  6. Pebels Taveras says:

    When you say filtered ? I have a zero water filtration system will that affect the sourdough?

    1. Lisa says:

      Filtered water works best, so that should be fine.

  7. Stephanie says:

    How strict is the 24 hr 12 hr time periods? Can it be within an hour or two or should you really stick to 24 hr and 12 hr as best you can? Thank you!

    1. Lisa says:

      It is flexible!

  8. Genesis Torres says:

    Hi Lisa! I am on day 4 of my very first starter following your recipe. I am using a 1L jar from Weck and itโ€™s already growing so much! When can I start using my discard for recipes? Do I have to wait until my starter is ready for baking/cooking?

    1. Lisa says:

      You can use your discard right away. It may not have the tangy flavor yet and won’t necessarily have the fermented health benefits yet. But it is still useable!

  9. Chaqeeta says:

    On days 6 & 7 do you still have to discard half and then feed each time?

    1. Lisa says:

      Yes

  10. Melanie Richter says:

    I have tried different sourdough starter kits and didn’t work out. Have tried your method and it is wonderful. Will be starting tomorrow with my first attempt. Will let you know how it turns out. Also would like to thank you.

    1. Lisa says:

      Good luck!